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Description

UK B.S. BS 6323-8, LW20 Specialsteel Specification for seamless and welded steel tubes for automobile , mechanical and general engineering purposes. Specific requirements for longitudinally welded stainless steel tubes and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: LW20
Category Class Grade Standard Country Application
Steel GradesSpecialsteel LW20 B.S. UK Specification for seamless and welded steel tubes for automobile , mechanical and general engineering purposes. Specific requirements for longitudinally welded stainless steel tubes

Chemical composition(mass fraction)(wt.%) of the LW20

C Si Mn P S Cr Ni Mo
≤0.03 ≤1.00 ≤2.00 ≤0.045 ≤0.030 17.00 -19.00 9.00 -12.00 ≤ ≥

Mechanical Properties of steel grade LW20

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
394 (≥) 588 (≥) 12 33 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical Properties of steel grade LW20

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
43 - -     0.23 -  
631 785 - 21.3 123   -  
167 - 44 41.2   131 343

Heat Treatment of steel grade LW20

Heat treated : 1851°C - 1971°C

Technological Curves of steel grade LW20

Cross Reference Table (Equivalent Grade) of LW20

Grade Standard Country Application
304S11
304S11
304S11
304S11

Relevant standard of LW20

BS 6323-8 Specification for seamless and welded steel tubes for automobile , mechanical and general engineering purposes. Specific requirements for longitudinally welded stainless steel tubes BS-6323-8.pdf

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